SCREW COMPRESSOR - HITACHI PLANT TECHNOLOGIES LTD

Title:

SCREW COMPRESSOR

Document Type and Number:

Japanese Patent JP2011007048

Kind Code:

A

Abstract:

To improve work efficiency of a screw compressor.

The screw compressor, sucking and compressing gas to be compressed for discharge to the outside, includes: a male rotor and a female rotor held in meshing engagement with each other; a mechanism for rotating the male rotor and the female rotor; a casing accommodating therein the male rotor and the female rotor; a bore portion formed in the casing to cover toothed portions of the male rotor and the female rotor; a plurality of working chambers formed in mating portions between a male toothed groove of the male rotor and a female toothed recess of the female rotor; and axial intake ports formed in the bore portion on a side at which gas to be compressed is sucked. In a rotation angle of rotation in which the working chamber has a nearly maximum volume, the axial intake port stops communication between the outside and the female toothed groove and communication between the outside and the male toothed groove in this order.

Inventors:

KAMETANI HIROCHIKA
UCHIDA RIICHI
TSURU SEIJI
SAITO TAKASHI
SUZUKI MAYA

Application Number:

JP2009148188A

Publication Date:

January 13, 2011

Filing Date:

June 23, 2009

Export Citation:

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